Bearing



(Model.)

P. H. HOLMES.

BEARING.

No. 482.309. Patented Sept. 6, 1892..

F/a. I

UNITED STATES PATENT OFFICE.

PHILIP H. HOLMES, OF GARDINER, MAINE, ASSIGNOR TO THE HOLMES FIBRE-GRAPHITE MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS.

' BEARING.

SPECIFICATION forming part of Letters Patent No. 482,309, datedSeptember 6, 1892.

Application filed September 18, 1891. Serial No. 406,084. (Model.)

To all whom it may concern:

Be it known that I, PHILIP HENRY HOLMES, a citizen of the United States,and a resident of Gardiner, Kennebec county, Maine, have inventedcertain Improvements in Bearings, of which the following is aspecification.

The object of my invention is to so construct a bearing made of acomposition of lubricating material and fiber that the fibers will bedisposed transversely and the ends of the fiber will be presented towardthe bearingsurface.

In the accompanying drawings,Figure 1 is a perspective view of a journal-bearing, illustrating my invention. Fig. 2 is a sectional View ofa journal-bearing, showing a shaft mounted therein. Fig. 3 is aperspective View of ya conimutator-brush made in accordance with myinvention, and Fig.4.is a view showing a iiat bearing for use as a stepor as a sliding` bearing.

I will first describe my invention in connection With the manufacture ofbearings in which plumbago and fiber are compressed and bound together.I mix with finely-divided plunibago the fiber, preferably Wood liber,Which is intimately mixed with the plumbago and with aliquid in asuitable mixing-machine, the compound being then forced into suitablemolds and molded into the desired form under great pressure. The moldsare so arranged that the outlets for the liquid are either at thebearing-surface or directly in line with said bearing-surface, asillustrated and described in my application for patent filed January 7,1891, Serial No. 377,028. In compressing the compound in the mold theplunger travels in a direction parallel with the bearing-surface, andconsequently the iiow of the liquid is transverse, and the fibers areturned so that they will lie transversely or at right angles to thebearing-surface, or, in other words, so that they Will present theirends toward the bearingsurface. After the compound has been compressed,as described, it is dried and subjected to oil treatment, preferably totreatment with a drying-oil, and is then dried or hardened by heat. Itwill be understood, however, that my invention is not limited to acompound such as described above, but it can be carried out in themanufacture of bearings generally in which the fiber is embodied with alubricating material; butI have foundby experiment that plumbago is themost available lubricating material and has the best lubricatingproperties. u

In Figs. 1 and 2 I have shown an ordinary journal-bearing adapted forline-shafting and axle-Work. In Fig; 3 Ihave shown a commutator-brush orcurrent-collector, which when 'adetofplumbago andiibe'r finsuitableproportions is a good conductor of electricity, the bearing-face a inthis case being at the end of the block, While the bearing-face a in theform of bearing shown in Figs. 1 and 2 is at the longitudinal groove orrecess. In Figs I have shown a flat bearing or step-bearing 1n which thebearing-face a is at the top or bottom. In the block shown in Fig. 3 thefibers lie parallel with the sides of the block, while in Fig. 4 theyare parallel with lthe ends, and in Figs. 1 and 2 the fibers radiatefrom the bearing-surface.

I claim as my invention- 1. A bearing made of aconiposition oflubricating material and fiber intimately mixed and compressed,thefibers at the bearing-surface being mainly in a direction transverselyto the longitudinal line of the bearing-face.

2. Abearing made of a composition of plumbago and fiber intimately mixedand compressed, the fibers at the bearing-surface lying mainly in adirection transversely to the longitudinal line of the bearing -face,and a binder, substantially as described.

3. A bearing made of a composition of plumbagoA or other lubricatingmaterial, the ber intimately mixed and united, said bearing having acurved bearing-face, the fibers lying mainly in lines radiating from thecenter from which said curved face is produced, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

PHILIP H. HOLMES.

Witnesses:

WILLIAM D. CONNEE, HENRY HoWsoN.

